Process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphth

Details Process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphth Process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphth

1986-10-17

1987-07-14

Lone, Werren B.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

568374, C11B 90, A61K 746

Patent

active

046801421

ABSTRACT:
Described is a process for preparing 4,4A,5,6-tetrahydro-7-methyl-2-(3H)-naphthalenone having the structure: ##STR1## and intermediates useful in such process defined according to the structure: ##STR2## wherein one of R.sub.3 or R.sub.4 is hydrogen and the other of R.sub.3 or R.sub.4 is acetyl; and one of R.sub.1 or R.sub.2 is methyl and the other of R.sub.1 or R.sub.2 is acetoxy, said compound defined according to the structure: ##STR3## being useful in augmenting or enhancing the aroma or taste of consumable materials including foodstuffs, chewing gums, medicinal products, chewing tobaccos, toothpastes, smoking tobaccos, smoking tobacco articles, perfumes, colognes and perfumed articles including solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softeners, fabric softener articles and perfumed polymers. Also defined and claimed is the prue crystalline form of the compound defined according to the structure:

REFERENCES:
patent: 3821253 (1974-06-01), Fried et al.
patent: 4157349 (1979-06-01), Bell et al.
patent: 4341908 (1982-06-01), Willis et al.
patent: 4385073 (1983-05-01), Pittet et al.
patent: 4418087 (1983-11-01), Pittet et al.
patent: 4499307 (1985-02-01), Pittet et al.
Rosen et al., "J. Amer. Chem. Society" vol. 87(2) 1965 pp. 275-286.

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